[time-nuts] Rb standard questions

paul swed paulswedb at gmail.com
Mon Aug 12 16:08:01 EDT 2013


What are the two lamp voltages?
You may be in the middle part of the life curve.
Regards
Paul
WB8TSL


On Mon, Aug 12, 2013 at 3:21 PM, Yuri Ostry <yuri at ostry.ru> wrote:

> Hello,
>
> Tuesday, July 30, 2013, 3:03:57, Bob Camp wrote:
>
> >> 3) what is the typical life of such a unit?
>
> B> If it's run without a heat sink, about two years.
>
> B> If it's power off on the shelf,  many decades.
>
> There was another "aging factor" mentioned in some documents that
> circulate around the net. Helium can diffuse from atmosphere through
> glass walls ans change buffer gas composition inside the cells.
>
> Run well cooled, >> 10 years for 90% of the units
>
> As I can see, my FRS-C still works well after approx 10 yrs on a cell
> site working 24/7 and 5 yrs sitting on the shelf. But lamp voltage
> that was recorded 5 yrs ago differs from the one that I measured
> when I put it back to work. It is lowered little bit.
>
> 73!
> Yuri
> UA3ATQ/KI7XJ
> --
> Best regards,
>  Yuri                          mailto:yuri at ostry.ru
>
>
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